package cn.itcast.bos.web.action.page;

import cn.itcast.bos.domain.base.FixedArea;
import cn.itcast.bos.service.base.FixedAreaService;
import cn.itcast.bos.web.action.commen.BaseAction;
import org.apache.commons.lang3.StringUtils;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Controller;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import java.util.ArrayList;
import java.util.List;

@Controller
@Namespace("/")
@ParentPackage("json-default")
@Scope("prototype")
public class FixedAreaPageAction extends BaseAction<FixedArea> {
    @Autowired
    private FixedAreaService fixedAreaService;
    @Action(value = "fixedArea_pageQuery",results = {@Result(name = "success",type = "json")})
    public String pageQuery(){
        Pageable pageable=new PageRequest(page-1,rows);
        Specification<FixedArea>specification=new Specification<FixedArea>() {
            @Override
            public Predicate toPredicate(Root<FixedArea> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
                List<Predicate> list = new ArrayList<>();
                if (StringUtils.isNotBlank(model.getId())) {
                    Predicate p1 = cb.equal(root.get("id").as(String.class), model.getId());
                    list.add(p1);
                }
                if (StringUtils.isNotBlank(model.getCompany())) {
                    Predicate p2 = cb.like(root.get("company").as(String.class), "%" + model.getCompany() + "%");
                    list.add(p2);
                }

                return cb.and(list.toArray(new Predicate[0]));
            }
        };
        Page<FixedArea>pageData=fixedAreaService.findPageData(pageable,specification);
        pushPageDataToValueStack(pageData);
        return SUCCESS;
    }
}
